2 Pack - 4mm to 32mm Spiral Flute Step Drill Bits High Speed Steel Titanium Coated, Metric Hex Shank, HSS Tool Set for DIY Plastic Wood Steel Metal Aluminum. Cone Cutter Hole Cutter Drill Bits

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Product description

  • HSS (high speed steel) with a titanium (Tin) coating - The titanium coating makes it easier to drill materials and also gives an improved tool life. Where possible use coolant to increase the tool life even further.
  • Suitable for cut holes in a variety of materials including steel, brass, wood, plastic, aluminum copper, gypsum board, metal material, fiberglass, and PVC etc, convenient to store in bag, car, or at home. Ideal for professional and home use
  • 1 4"(6.35mm) hex shank - will fit in any drill with a standard chuck and any pillar drill.
  • Each step is clearly marked with the diameter

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